IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS -59
Q7501, Q7502: M66005-0001AHP (FL Tube Driver)
BLOCK DIAGRAM
TERMINAL DESCRIPTION
DTR-7.8
These pins are used to connect to digit pins of VFD.
RESET
Reset input
This pin is used to initialize the internal state of the M66004.
CS
Chip select input
"L" : Communication with the MCU is possible.
"H" : Any instruction from the MCU is neglected.
SCK
Shift clock input
At the rising edge from "L" to "H", input data is shifted.
SDATA
Serial data input
Character code or command data to display is input from MSB.
XIN,
XOUT
Clock input
Clock output
This pin is used to connect a resister and a capacitor externally to
set oscillation frequency.
DIG00 ~
DIG15
Digit output
SEG00 ~
SEG39
Segment output
P0, P1
Output port (static operation)
VSS
GND
VP
Negative power supply for VFD drive.
VCC1
VCC2
Positive power supply for internal logic.
Positive power supply for high-pressure-resistant output port.
SYMBOL
PIN NAME
DESCRIPTION
PIN NO.
13
14
15
16
21,
20
1~12
61~64
23~31
33~59
17, 18
19
60
22
32
These pins are used to connect to segment pins of VFD.
14
15
16
CG ROM
(35bit x 160)
CG RAM
(35bit x 16)
code
write
data
dot data
write
code
select
12
1
DIG00
DIG11
scan pulse
CS
SCK
SDATA
21
20
XIN
XOUT
13
RESET
18
17
2
P0
P1
19
60
22
32
Vcc1
Vcc2
Vss
Vp
Code/
command
control
circuit
Bank 1 : 8bit x 16
Bank 2 : 8bit x 64
Segment
output
circuit
Segment/
Digit
select/
output
circuit
Clock
generator
timing
clock
Display
controller
Serial
receive
circuit
Display code RAM
Digit
output
circuit
59
33
31
23
64
63
62
61
DIG12/SEG36
DIG13/SEG37
DIG14/SEG38
DIG15/SEG39
SEG00
SEG26
SEG27
SEG35
24 SEG34
